Centrifugal machine.



PATENTED JUNE 30,1908.

B. LJUNGSTRUM. OENTRIFUGAL MACHINE.

APPLIGATION FILED JULY 23. 1906.

NEED wees,

urns-ion.

BIRGER LJ UN GSTROM, OF STOOKHOLM, SWEDEN, ASSIGNOR TO AKTIEBOLAGET SEPARATOR, OF STOCKHOLM, SWEDEN A COMPANY.

' CENTRIFUGAL MAGHITATIE.

Specification of Letters Patent.

Patented J'une 30, 1908.

Application filed. July 23, 1906. Serial N o- 327,40 9.

do hereby declare the following to be a full,-.,

clear, and exact descri tion of the invention, such as will enable t e skilled in theart to which it appertains t .ake and use the same, reference being had to the accompanying drawings, and to letters or figu' of reference marked thereon, which form a art of this specification.

In the hitherto known centrifugal machines for separating liquids from solid masses such as from saltor sugar-crystals in order to bring the latter to a dry condition, a cylindrically or conically shaped drum with perforated mantle has been used in which the material to be dried was introduced for separating purposes. The solid invention relates to centrifugal machines such as I have just been speaking of; for the purpose of making this clear I will repeat that the centrifugal machines of the present invention are used for the purpose of separatin liquids from solid masses, such as from sa t or sugar crystals, in order to bring the latter to a dry condition.

The object of this invention is obtained by making the drum of conical plates, placed one above the other, and provided with perforations of suitable shape, there being between two erforated plates-a solid plate which forms a rind of guiding plate for the separated liquid. The surface on which separation takes place in such a machine is very large in proportion to the dimensions of the drum and accordingly its separating power is very considerable.

The drawing illustrates in Figures 1 and 2 vertical sections through the drums of two examples of construction.

The conical separating plates a -(as shown in Fig. 1') are erforated like sieve bottoms.

Their outer e'ges b are suitably bent down cylindrically at this point to narrow the slot between the plate a and the plate 0, to be hereinafter described, thus partiall stopping or arresting thematerial so t at the solider parts may pass through the drum with such reduced speed as is necessary for ur ing'toitake place.

between the sieve plates (1, solid plates 0 are arranged which serve for guiding the separated liquid to a suitable receptacle so as to prevent a remixing of the solid and liquid constituents. The solid constituents slide along the sieve plates and are slung out Over the edges 1) into a special receptacle, not shown in the drawin The plates a and c are carried by. the pil ars 10, secured to disk 11,which is connected to shaft 12.

The described form of construction of the centrifugal machine is suitable especially for such masses, the solid constituents of which are not too finely divided, i. e., for sugar crystals, salt crystals, and the like. porcelain-earth or other very finesolids, the centrifugal machine illustrated in Fig. 2 is more suitable. In this the outflow-perforations are formed in the known manner between two parts, movable with regard to each other. The openin s may, therefore, be very finely adjusted without fear of their becoming constricted, for the solid particles? which might possibly get into the openings? are continually changing their position, and reach soon the edge and are flung out.

In Fig. 2, the conical separating plates at are formed'of rings, spaced apart to form grooves (Z. These rings are secured together and the plates thus formed are secured to the guide platesc, which are connected by bolts or pillars e to the disk f, the latter being con-' nected with the hollow shaft g, so as to rotate therewith. In the grooves 05 of the plates a are rings h, which are carried by bolts or pillars i on a disk L" on the shaft Z. shafts g and Z arcrotated, but at a differential speed, whereby the rings h and the lates 9, have a relative movement. The iquid flows through the slots and is led away by the guide )lates c. The solid particles, however, 105

each guide-plates in Fig. l loosely about a 110 For The two of eac. pair of plates, all of said plates be-.

sieve-plate a, both lates may be made integral and the liquid ed outside through channels left- -between the plates.

Having now fully described my invention, what I claim and desire to protect by Letters Patent isj 1. In a continuously operative centrifugal machine forseparating liquids from solid constituents, in combination, an upper and lower conically sha ed plate, 'the upper late having openings t lerethrough, said p ates forming between them a separating chamber and a solid conical plate superposed upon said upper plate, all of said plates being rotatably mounted, whereby the liquids, separated-from the solids and passing through the plate having 0 enings, are caught by the solid late and ed to the'periphery.

2. n a continuously operatlve centrifu al' machine for separating liquids from solid constituents, in combination, a series of upper and lower conically shaped lates, each pair of plates forming between t 1cm a separating e having an openin a' solid vconical plate, super )osed above t 10 plate, having openings ing rotatably'mounted, whereby the liquids, separated from the solids in each chamber and passing through the plates having 0 enings, are caught by the solid plates an led to the periphery. 3. In a continuously operative centrifugal separating plate.

iamber, the upper plate of each pair' machine for separating liquid from solid eonstituents, in combination, superposed alternate conically shaped separating plates, having openings therethrough and conically shaped solid guiding plates, each of the separating plates being secured to the guiding plate above it, both the guiding plates and the separating plates being rotatably mounted. I r p 4. In a continuously operative centrifugal machine for separating liquid from solid eonstituents, in combination, superposed alternate conically shaped separating plates; having, openings therethrough, devices in said openlngs', solid guiding plates, said devices in -said openings having a relative movement with respect to the corresponding 5. In a continuously operative centrifugal machine for separating liquids from solids, a

series of upper and lower plates, both of con-' ical shape, the upper plates being perforated, said plates being rotatably mounted, the s ace between said ilates forming separating c iambers ol' coniea shape and opening outwards.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

. BIRGER LJUNGS'IROM.

Witnesses: I

CARL FRIBE-RJ, HJALMAn ZE'rrERs'rRoM. 

